[latexila] NEWS file: start to write news for next version

[Sébastien Wilmet <swilmet src gnome org>]

commit b674b58af7f519478ea87926fecf1aedb3f69fc8
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Aug 19 15:25:09 2017 +0200

    NEWS file: start to write news for next version

 NEWS |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 091b3c4..8dd6d33 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,14 @@
 LaTeXila NEWS
 
+Release 3.xx.y, 2017-xx-yy (not yet released)
+--------------------------
+* Use more Tepl features (15935 -> 15815 lines of Vala code and
+  gedit-close-button.c removed).
+* Small improvements here and there.
+* latexmk post-processor: fix bug with LaTeX warnings and badboxes not
+  detected with new versions of latexmk.
+* Translation updates.
+
 Release 3.25.1, 2017-07-18
 --------------------------
 * The Gtef library has been renamed to Tepl, adapt the code accordingly.